I struggled with this also, mainly because we are having our AHR 3 days after we return, so have to send the invites out before we go and before we are married. Just incase anyone else is doing the same our wording is.....

Tom and Emily are making their dream come true and are getting married in Playacar Mexico on 5th October 2010.

Together with their parents they request the company of ........... to help them celebrate their marriage.